Ments



Oct. 29, 1929. |v{ H HOLCQMBE 1,733,346

BUNCH BUILDER ATTACHMENT Filed.' May 3, 1924 2 Sheets-Sheet l 0d. 29, 1929. H H HOLCOMBE 1,733,346

BUNCH BUILDER ATTACHMENT Filed May 5, 1924 2 sheets-sheet 2 Patented Oct. 29, 1929 UNITED STATES PATENT OFFICE HOMER H. HOLCOMBE, OF BIRMINGHAM, ALABAMA, ASSIGNOR, :BY INIESNE ASSIGN- MENTS, TO HOLCOMBE TEXTILE EQUIPMENT CO., INC., OF BIRMINGHAM, ALABAMA,

A CORFORATION OF ALABAMA BUNCH-BUILDER ATTACHMENT Application filed May 3,

, This invention relates to spinning frames, and'more particularly to the builder motion thereof which controls the laying on or winding ot the yarn or thread upon the yarn reat the base of the feeler wood before the main or service winding'is laid. lVhen the yarn has been substantially Woven ott in the loom siiiiiciently to effect a change of filling it is contemplated that'this preliminary winding 'or bunch will be lett on the bobbin andwill comprise sufficient yarn t0 Aenable the shuttle to be passed one or more Vtimes across the loom without causing a mispick or thin place in the cloth.

ln vmy pending application, Serial No.

` @03,3-37, l have shown and claimed generically an automatic bunch builder attachment comprising a driving gear deriving motion from thebuilder cam shaft anda segmental driven gear movable with the builder rack and adapted to be brought automatically into i'i'iesh with the driving gear when the frame is dotted so that when the frame is started up the engagement ot thev two gears will act to hold the builder rack in'position to lay the ininch winding with the proper traverse at the base oir' the ifeeler wood before the rack is released to the control of the main builder cani. Y l

@ne object of my present invention is to simplify 4and perfect the automatic means for bringing the segmental driven gear into mesh with its driving gear and to this end I contemplate using a latch which is movable responsive to the winding up of the traverse chain on the drum after the lowering of the ring rail and which, as thus moved, will cause the driven gearto mesh with the driving gear. My 'invention also contemplates novel means tor automatically disengaging the latch from the driven gear as it is rotated, the driven gear Ybeing adapted automatically Yto assume idle position after moving out of mesh with its driving gear and until again engaged and moved into mesh by the latch.v

i924@ serial No. 710,778.

My invention alsocontemplates improvements in the design of the-segmental driven gear and in the means for adjusting the ellective arc subtended by it thereby to control the length of the thread or yarn that will be wound in the bunch.

My linvention also comprises the novel details ot construction and arrangement of parts, which in their preferred embodiment only are illustrated in 'the accompanying drawings which form a part of this specification,.and in which Fig. l is a side elevation showing conventionally a builder rack equipped with my bunch building mechanism shown in idle position. y

Fig. 2 is a plan view of Fig. 1.

Fig. 8 is an enlarged detail View of the segmental gear with its controlling latch shown about to move the gear into operating position.

Figs. 4 4l and 5 aie similar views of the builder mechanism, Fig'. 4 showing the latch about to be disengaged after the gears are in mesh, and Fig. 5 showing a position assumed by the latch'during the building of the bunch.

Fig. 6 is a detail view of a bobbin with the bunch windings in full lines and the main windings dotted.

' Similar reference numerals refer to similar parts throughout the drawings.

Iy have illustrated my invention in connection with a typical builder rack l, and since its use involves no change in the other standard parts of a spinning frame, I will omit any illustration or description of the latter as such would encumber the specification and drawing with needless details.

' The conventional builder rack shown carries the usual drum 2 upon which is wound a chain 3 that is hooked to ,the main traverse chain ll. This chain 4t, in the manner well understood in the art, controls the position ot the ring rail and the winding of' the yarn l on the bobbins 30. On the outer end of the Y 7 of any usual design on which is mounted a pitman roller 8 that is adapted to be en# for applying the main windings 31 tothe bobbins. All of the parts as thus far described are of standard construction and may obviously be varied according to the type of spinning frame to which. my invention is to be applied.

My improved bunch building mechanism for automatically building the preliminary winding or bunch of yarnV 32 at the base of the feeler wood 33 of bobbins 30, comprises a driving element preferably a. gear 11 fast on the shaft 10, though it may be driven in any suitable way so long as its driveV is coordinated with the drive of the main builder cam 9, A slotted bracket 12` is attached to the builder rack` 1 in any suitable manner, preferably by the use of one of the standard bolts 13 in the rack, the slot being provided in the bracket to enable it. to be adjusted to suit diiierent types of racks. I mount a bearing preferably in the form of a stud 14 in the end of the bracket 12 and I journal on this bearing the driven element ofl the bunch builder mechanism which is. illustrated as a segmental gear 15. This gear 15 may be made in one part, but is preferably made in half sectionsllG andV 16a, having a common hub portion adapted to be mounted on the bearingy 14 and having alignin teeth on their lapped peripheral edges. T e sections are adapted to be interlocked by a bolt 17, and extra bolt hole or holesvlS areprovided in the section 16 if it be desired to reduce the arc. subtended by the assembled segmental gear beyond thatshown in Fig. 3. Each gear section is provided witha group oi end teethy 19'which are drawn in on a decreasingvradius for the purpose of easing the builder rack upwardly. as the segmental gear runs out of mesh at either end with the driving gear 11, andavoiding asudden jump when the builder rack is restored to the control of the builder cam 9 at the completion of the winding of. the bunch. In order that the requisite traverse may be provided for the proper winding of the bunch the gear 15 is provided betweenthe teeth 19,- with spaced groups ofhigh teeth 20 `and 21 and interposed groups of low teeth 22, the periphery` of the gear being indented so as toset the teeth 22 with the propel` pitch much closer to the axis of the vgear than the teeth 20, 21, and by this arrangement the builder rack, which is held downward against the weight of the ringfrail bythe engagementof theA gears 15nand 11, will have a rise and fall imparted to it sulicient to give a traverse for Winding the bunch. When it is desired to shorten the length of the bunch the bolt 17 will be engaged in the hole 18 which will bringY the sets of teeth 21 and 20 of gear sectionv 16 into alignment respectively with the sets of teeth 20 and 21 of gear section 16a. The gear 11 is wide enough to mesh the teeth of both segmental gear sections and thus Iprovide for thelengthening and shortening of the period of! engagement between the driving and driven gears, which period determines the time the yarn is being wound to form the bunch., I have shown only two adjustments,` but obviously the number may be increasedjby the same means.

Ihe segmental `gear will normally hang by gravity with its teethbelow position to mesh the gear 11,y which is the position shown. in Fig.. 1 .j andI will.v now describe the mechanism ior automatically bringing the bunch building mechanism into operation.

I screw a stud bolt 23y intothe drum 2 and placca spacer lS24-around the bolt as a simple means oi' providing an offset bearing for a.

latch 25 that is thus mounted in position to clear the outer i'ace of the gear 11 and vto Swingin a'vertical planel adjacent to the outer face ofv the segmental gear. Near the iiree` endyofgthis latch in itsunder edge I provide an inclined notch 26. which incertain positions of. thelatch is adapted to engage a pin 27 least onthe'outer gear section 16`which also carries immediately below the pin 11 a largerboss or llug 28 which isof such shape and size. that it will not engage in or enter thenotchu2bv wheny it engages `and supports thelatch asshown in Figf.v

In operation, the latch bearing 23 is'mountedin the drum2in such positionthat when the drum stands. with` thechain 3l unwound, which is thev position it assumes when the frame hasbeen fil-ledandisready fordoffing, the latch willrest on the pin 2.7 with itsnotch 26 beyond the pin.` When theA ring rail has been loweredand slack has been placed in the traversechain 4, the builder rack by reason of vitsweight. will. Vswir'ig down about its pivotal support 29. As a part of the doliing operation, the drum 2 is wound up to take up this slackin the traverse chain, and as shown it` will be wound in the direction kof the arrow in Fig. 1.. As itis rotatedl'the latch 25 willbe drawn toi the left untill its notch 26` drops over. and engages the pin 27'. The continued rotation et? the drumV will carry with it the latch and swing theA segmental gear on :itsaxis 14fi1'ntil` the teeth 19. `meshthe gear 11, see Fig. 4, and/in this position the segmental gear willbe h elduntil the frame is started up. When thef'rame is started up, thegear llwill commence to rotate. counterclockwise and will rotate with. it the segmental gear,` causing its boss 28 to move between fthe -pin 27i and 'the ylatch yl'aearing23 -and vthus automatically to lift and disengage the latchy from the pin 27 after which the latch will ride on the boss until the segmental gear has run out of mesh with gear 11 when the end of the latch beyond the notch 26 will drop onto the pin 27 and Will ride thereon. As the drum 2 is unWound during the lling of the frame it shifts the latch to the right, causing its inclined notch to ride over and stand beyond the pin 27, as shown in Fig. l, when the latch is ready for the operation to be repeated.

The segmental gear is set so that when its high teeth 20 or '21 are in mesh with the gear 11, a high point on the builder cam 9 Will be touching the main pitman roller 8.

From uns a fuows um the 10W teeth s2 on the segmental gear can follow up and mesh the gear 11 since the pitman roller 8 Will then be opposite a low point of the builder cam. It is equally obvious that While the gears 16 and 11 are engaged the builder rack cannot follow to the low points of the main builder-cam 9 but only as far as the low teeth 22 on the segmental gear Will permit. Hence, the main builder cam and its pitman roller will not co-act so as to interfere with the operation of building the bunch, nor Will the bunch building mechanism hold the pitman roller so as to block the main cam as the builder rack is at all times free to move downwardly if a high point of the cam 9 happens to touch the pitman roller While loW teeth on the gear 16 are meshing the gear 11. Moreover, since the segmental gear takes control of the builder rack When the latter is in the position Where it Would be set by the engagementof a high point on the builder cam with the main pitman roller, it follows that the bunch 32 will be built in the proper place at the base of the feeler Wood 33. As soon as the bunch building' gears have run out of mesh, the teeth 19 Will ease the rack 1 back into position for its roller 8 to be picked up and thereafter con- Vning frames, a driving element rotatable trolled by the main builder cam, and during the application of the main service windings the segmental gear 16 Will hang idle out of position Where it could interfere in the least. It is important to note the eXtreme simplicity of this mechanism for automatically accomplishing the objects needed, it requiring only the mounting of the gear 11 on the cam shaft, the mounting of the bracket 12 on the builder rack bolt 13, and the pivoting of the latch to the drum 2, and with these simple changes the device can be applied to any type of spinning frame in which the ring rail is lowered to dott.

Though I have described With great particularity the details of the embodiment of the invention herein shown. it is not to be construed that I am limited thereto, as changes in arrangement and substitution of equivalents may be made by those skilled in the art Without departing from the invention as defined in the appended claims.

By the expression in the claims that the bunch builder mechanism in operation intercepts control of the builder rack by the main builder cam, I mean that such interception prevents the laying of windings other than in the bunch, it being obvious that a tip of the builder cam might engage and lower the builder rack to lay windings at the top Vof the bunch or so close thereto as not to intertere materially with the Winding of the bunch. My purpose is attained so long as the engaging, driving and driven elements of the bunch builder mechanism Will prevent the builder rack moving substantially out Vof a range of positions required for the build- Ythe builder cam.

2. In a bunch builder attachment for spinning frames, a driving element rotatable with the builder cam, a driven element in engagement with the builder rack and adapted to stand normally disengaged from said driving element, and means, responsive to the Winding of-thetraverse chain, to bringthe driving and driven elements into engagement, said elements While engaged being adapted to intercept control of the builder rack by the builder cam and give a traverse for the Winding of the bunch.

3. In a bunch builder attachment for spin- With the builder cam, a driven element mounted to rotate on lthe builder rack and adapted to stand Vnormally disengaged from said: driving element, and means, responsive to thewinding of the traverse chain, to bring the driving and driven elements into engagement, said elements while engaged being adapted to interceptcontrol of the builder rack by the builder cam to give a traverse for the'winding of the bunch. 4, A bunch builder attachment according to claim 1, in Which the driven element is adapted to hang out of position to engage the driving element during the application of the main service windings to the bobbins.

5. In a bunch builder mechanism for spinning frames, a driving element rotatable with the builder cam, a driven element in engagement with the builder rack and adapted to llO stand normally disengaged from said driving element, means automatically vresponsive Vto an operation incidental to doiling the frame for moving said elements into enga-gement, side elements While engaged being adapted to intercept control of the builder rack by the builder cam, and means movable with one of said elements to disengage and reset said means for moving said elements into engagement. Y

6. A bunch. buildermechanism.according to` claim 5, in which the disengaging and resetting means are carried by the driven, element. l

7. A bunch builder attachment for spinning frames, comprising a driving gear rotatable with the builder cam shaft, a segmental gearmounted to rotate on the builder rack and disposed normally out of position to engage said driving gear, a latch movable responsive to the Winding of the' traverse chain and adapted as it moves to engage and rock the segmental gear i-nto mesh with said other gear, and trip means on the segmental gear to release the latch after said gears are in mesh, said gears when in mesh being adapted to intercept control ot the builder rack by the builder cam for the purposes described. i

8. A bunch builder attachment according to claim 7, in which the latch is pivotally mounted on the Winding drum for the traverse chain.

9. A .bunch builder attachment according to claim 7, in Which the latch is` pivotally mounted on the Winding drum for the traverse chain and the segmentalfgear has a pin which said latch engages.

10. A bunch builder attachment according to claim 7, in which the latch is pivotally mounted on the Winding drum for its traverse chain and the segmental gear has a pin which said latch engages, said trip means being a stud too large to enter said notch.

11. In a bunch builder attachment for spinning frames, a gear rotatable With the builder cam shaft, a segmental gear mounted to rotate on the builder rack and normally standing out of position to engage said other gear duringthe application of the main service windings to the bobbin, a latch pivotall-y attached to the drum for the traverse chain, a pin on the segmental gear to be engaged by the latch, and as the drum is Wound to move the segmental gear into mesh with the other gear, and a stud on the segmental` gear disposed to release the latch from the pin asithe segmental gear is driven, said gears When in mesh being adopted to intercept control of the builder rack bythe builder cam.

12' A bunch builder mechanism'according to claim 7, in which the segmentalgear has a pinand a larger trip stud,land the latch has an intermediate notch too small to dropover said stud and spaced farenoughffrom the free the bunch.

end of theflatch tog-permit the latter to ride always onsaidstud-or pin,'as and for the purnsesdesrbdi i 13. In a bunch builder attachment for spinning. trames, a driving element rotatable engagement between said elements, as and lor the purposes described. p

14. A bunch builder attachment according to claim 13, in which said elements are gears, the element on the builder rack being a segmental gear formed of lapped sections Which can be adjusted to vary the arc subtended by the `toothed periphery ofl such gear.

. 115. A; bunch builder attachment according to claim 13, in which the elements are gears, the elementen' the builder raclr being a segmental gear formed of lappedv sections which can be adjusted to vary the arc subtended byth'etoothed periphery` of such gear, there beinghigh and lovv teethon saidb segmental gearto eftecta traverse for the building of 16. In a bunch builder attachment ytor spinning frames,a driving element rotatable responsive to themainibuilder cam shaft, an

element mountedv on the builder rack, means to bring said elementsV into engagement automatically responsive to a dofling operation,- said elements While in engagement being adapted to intercept 'control of the builder rack by the builder cam, and means to adjust y HoMnn HoLcoiJ/nan.

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